This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How many mL of 16 M NH3 are needed to prepare 2.00 L of a 2.00 M solution? A) 250 mL B) 125 mL ... (Read 71 times)

s.tung

  • Hero Member
  • *****
  • Posts: 577
on: Aug 27, 2018
How many mL of 16 M NH3 are needed to prepare 2.00 L of a 2.00 M solution?
 
  A) 250 mL
  B) 125 mL
  C) 16 mL
  D) 8.0 mL
  E) 4.0 mL

Question 2

Use the standard reaction enthalpies given below to determine Hrxn for the following reaction:
 
  P4(g) + 10 Cl2(g)  4PCl5(s) Hrxn = ?
 
  Given:
   PCl5(s)  PCl3(g) + Cl2(g) Hrxn= +157 kJ
   P4(g) + 6 Cl2(g)  4 PCl3(g) Hrxn = -1207 kJ
 
  A) -1835 kJ
  B) -1364 kJ
  C) -1050. kJ
  D) -1786 kJ
  E) -2100. kJ

Question 3

A gas at 25C exactly fills a container previously determined to have a volume of 1.05  103 cm3. The container plus gas are weighed and found to have a mass of 837.6 g. The container, when emptied of all gas, has a mass of 836.2 g.
 
  What is the density of the gas at 25C?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Christopher

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

A

Answer to Question 3

1.3  10-3 g/cm3


s.tung

  • Hero Member
  • *****
  • Posts: 577
Reply #2 on: Aug 27, 2018
TY


Christopher

  • Sr. Member
  • ****
  • Posts: 316
Reply #3 on: Aug 27, 2018
You're welcome


« previous next »
 

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Movement of fluids and solution tonicity Movement of fluids and solution tonicity
Evaluate: With solution. Evaluate: With solution.
lab solution lab solution
The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C? The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C?
Which of the following is a solution? Which of the following is a solution?
A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution? A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution?
Video: Embryonic development - week 1 and 2

For a complete list of videos, visit our video library